This dual purpose checker sets the clearance of the crankshaft sensor before the harmonic balancer is installed. Then, with the same tool, you can also check the harmonic balancer interrupter ring for bent vanes.

Applications:

Works on Buick 3800 engines with DIS ignition, and GM vehicles with V-6 3.0 and 3.8L, 3300 and 3800 engines with DIS ignitions.